Pressure Vacuum Breaker Assembly (PVBA)

Features & Purposes


Each assembly has different features and purposes. Choose an assembly that meets your needs.

Pressure Vacuum Breaker Assembly (PVBA)


A PVB is a mechanical backflow preventer that consists of an independently acting, spring-loaded check valve and an independently acting, spring-loaded air inlet valve on the discharge side of the check valve. It includes shutoff valves at each end of the assembly and is equipped with test cocks. A PVB may be used to isolate health or non-health hazards but is effective against back siphonage only.

Details about this system include:
  • Installed 12 inches above highest piping point
  • State requires annual testing by State-certified tester
  • Used for irrigation systems supplied by City water only
Pressure Vacuum Breaker Assembly Installation Illustration
Pressure Vacuum Breaker Assembly